CN203982237U - The anti-condensation supervising device of transformer station - Google Patents

The anti-condensation supervising device of transformer station Download PDF

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Publication number
CN203982237U
CN203982237U CN201420394107.4U CN201420394107U CN203982237U CN 203982237 U CN203982237 U CN 203982237U CN 201420394107 U CN201420394107 U CN 201420394107U CN 203982237 U CN203982237 U CN 203982237U
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China
Prior art keywords
module
temperature humidity
humidity sensor
condensation
supervising
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Expired - Fee Related
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CN201420394107.4U
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Chinese (zh)
Inventor
金涛
褚福亮
唐晓艳
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Fuzhou University
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Fuzhou University
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Abstract

The utility model relates to the anti-condensation supervising device of a kind of transformer station.Multidiameter option switch, heater module, the alarm module that comprises main control module and be connected with this main control module and the communication module communicating with host computer, also comprise that one is used to the power module of whole device power supply, described main control module is also connected to the clock line of a Temperature Humidity Sensor module, and described multidiameter option switch is also connected to the data line of described Temperature Humidity Sensor module; Described Temperature Humidity Sensor module comprises the first Temperature Humidity Sensor for gathering the high voltage power distribution room temperature humidity in box-type substation and for gathering the second Temperature Humidity Sensor of the low-voltage distribution room temperature humidity in box-type substation.The utility model is by gathering the humiture in box-type substation, and the heating of control heater module to box-type substation, can effectively prevent the generation of condensation in box-type substation cabinet, has improved box-type substation reliability of operation and security.

Description

The anti-condensation supervising device of transformer station
Technical field
The utility model relates to a kind of anti-condensation supervising device, especially for the anti-condensation supervising device of transformer station of box-type substation.
Background technology
Along with the develop rapidly that Modernization is built, the continuous renewal transformation of urban power distribution network, box-type substation is widely used because of its compactedness.But in the time that moisture in air content acquires a certain degree, may there is at a lower temperature condensation phenomenon in box-type substation, thereby cause corrosion, cause insulating capacity to decline, affect its machinery, electric property, except meeting causes economic loss, even may cause insulating part surface to produce creeping discharge and accidents caused.Therefore the anti-condensation work of, carrying out box-type substation will be ensures the requisite measure of electric power netting safe running.
China is in the history for solving switch cubicle anti-condensation existing decades.In transformer station, extensively adopt at present the method for heating and dehumidification, but major part has the following disadvantages: condensation-preventing controller itself is lacked to effective monitoring and controlling means, be difficult to monitor the running status of heating and dehumidification equipment; Most of terminal works power supply directly by electric capacity from the power taking of alternating current 220V power supply, dehumidify by thyristor control heating plate, without any electrical isolation, there is potential safety hazard in this pattern; Traditional heating controller needs artificial throwing to move back, and has increased the weight of operations staff's work load.
Summary of the invention
The purpose of this utility model is to provide a kind of transformer station anti-condensation supervising device, and this device circuit is simple in structure, is easy to realize.
For achieving the above object, the technical solution of the utility model is: the anti-condensation supervising device of a kind of transformer station, multidiameter option switch, heater module, the alarm module that comprises main control module and be connected with this main control module and the communication module communicating with host computer, also comprise that one is used to the power module of whole device power supply, described main control module is also connected to the clock line of a Temperature Humidity Sensor module, and described multidiameter option switch is also connected to the data line of described Temperature Humidity Sensor module; Described Temperature Humidity Sensor module comprises the first Temperature Humidity Sensor for gathering the high voltage power distribution room temperature humidity in box-type substation and for gathering the second Temperature Humidity Sensor of the low-voltage distribution room temperature humidity in box-type substation.
In the utility model embodiment, described main control module adopts PIC16F887 chip, and adopts 4MHz crystal oscillator, and peripheral hardware crystal oscillating circuit and reset circuit.
In the utility model embodiment, described the first Temperature Humidity Sensor and the second Temperature Humidity Sensor all adopt the intelligent temperature/humidity sensor of SHT11 type.
In the utility model embodiment, described multidiameter option switch adopts CC4051 analog switch.
In the utility model embodiment, described communication module adopts MAX1487.
In the utility model embodiment, described power module comprises and is used to the AC220V power supply and first of described heater module power supply to second source change-over circuit; Described the first power-switching circuit is used for converting AC220V to DC5V, and is described main control module, communication module and multidiameter option switch power supply; Described second source change-over circuit converts DC3.3V to for the DC5V that described the first power-switching circuit is exported, and is described the first Temperature Humidity Sensor and the power supply of the second Temperature Humidity Sensor.
In the utility model embodiment, described the first power-switching circuit adopts transformer and circuit of three-terminal voltage-stabilizing integrated 7805; Described second source change-over circuit adopts AMS111733.
Compared to prior art, the utlity model has following beneficial effect: the utility model circuit structure is simple, be easy to realize; The utility model device is by gathering the humiture in box-type substation, and carry out the heating of control heater module to box-type substation by main control module, the generation of condensation in box-type substation cabinet be can effectively prevent, box-type substation reliability of operation and security improved.
Brief description of the drawings
Fig. 1 is the anti-condensation supervising device schematic diagram of transformer station.
Fig. 2 is the mu balanced circuit figure that DC12V turns DC5V.
Fig. 3 is heater module working circuit diagram.
Fig. 4 is SHT11 and single-chip microcomputer connecting circuit figure.
Fig. 5 is Temperature Humidity Sensor and single-chip microcomputer connecting circuit figure.
Fig. 6 is communication module and single-chip microcomputer connecting circuit figure.
Embodiment
Below in conjunction with accompanying drawing, the technical solution of the utility model is specifically described.
The anti-condensation supervising device of a kind of transformer station of the present utility model, multidiameter option switch, heater module, the alarm module that comprises main control module and be connected with this main control module and the communication module communicating with host computer, also comprise that one is used to the power module of whole device power supply, described main control module is also connected to the clock line of a Temperature Humidity Sensor module, and described multidiameter option switch is also connected to the data line of described Temperature Humidity Sensor module; Described Temperature Humidity Sensor module comprises the first Temperature Humidity Sensor for gathering the high voltage power distribution room temperature humidity in box-type substation and for gathering the second Temperature Humidity Sensor of the low-voltage distribution room temperature humidity in box-type substation.
Described main control module adopts PIC16F887 chip, and adopts 4MHz crystal oscillator, and peripheral hardware crystal oscillating circuit and reset circuit; Described the first Temperature Humidity Sensor and the second Temperature Humidity Sensor all adopt the intelligent temperature/humidity sensor of SHT11 type; Described multidiameter option switch adopts CC4051 analog switch; Described communication module adopts MAX1487.
Described power module comprises and is used to the AC220V power supply and first of described heater module power supply to second source change-over circuit; Described the first power-switching circuit is used for converting AC220V to DC5V, and is described main control module, communication module and multidiameter option switch power supply; Described second source change-over circuit converts DC3.3V to for the DC5V that described the first power-switching circuit is exported, and is described the first Temperature Humidity Sensor and the power supply of the second Temperature Humidity Sensor; Described the first power-switching circuit adopts transformer and circuit of three-terminal voltage-stabilizing integrated 7805; Described second source change-over circuit adopts AMS111733.
It is below specific embodiment of the utility model.
As shown in Figure 1, the communication module that the related anti-condensation supervising device of transformer station of the utility model communicates by Temperature Humidity Sensor, main control module, power module, heater module, multidiameter option switch, with host computer etc. forms, wherein Temperature Humidity Sensor has two, be responsible for gathering the temperature and humidity of box-type substation inner high voltage switchgear building for one, another is responsible for gathering the temperature and humidity of low-voltage distribution chamber.Two Temperature Humidity Sensors, transmit data respectively by main control module collected data after processing is processed under the control of multidiameter option switch; Main control module is responsible for temperature, humidity data judge, analyze, process the work of control heater module afterwards and data are sent to host computer by communication module; Heater module is responsible for carrying out heating and dehumidification according to the value setting, in the time that institute's measuring moisture is greater than the upper limit humidity of setting or measured temperature and is less than the lower limit temperature of setting, start the heating plate work of heater module, in the time that institute's measuring moisture is less than the lower limit humidity of setting or measured temperature and is greater than the ceiling temperature of setting, stop heating plate work; Power module is responsible for to each circuit module power supply; For ease of showing and setting parameters, the present embodiment is also connected with a host computer, host computer major function is to set temperature, humidity upper lower limit value, be responsible for real-time Communication for Power, monitoring and report to the police, when the humiture of monitoring point exceedes or excessively of a specified duration lower than the time remaining of setting value, host computer will send warning signal, and signal be sent to abnormal terminal simultaneously, make it send alarm, be convenient to field personnel and judge rapidly and accurately abnormity point and and handle it.
In the utility model, selected device model is: Temperature Humidity Sensor is selected SHT11 digital temperature-humidity sensor, and main control part is selected single-chip microcomputer PIC16F887, and communications portion is selected MAX1487, and multidiameter option switch is selected CC4051 analog switch.Wherein the operating voltage of MAX1487, PIC16F887 and CC4051 analog switch is DC5V, its power supply mode is for adopting transformer that AC220V is just converted to DC12V, through circuit of three-terminal voltage-stabilizing integrated 7805, DC12V is reduced to DC5V again, wherein mu balanced circuit as shown in Figure 2.And the operating voltage of SHT11 digital temperature-humidity sensor is DC3.3V, its power supply mode is for utilizing AMS111733 to convert DC5V to DC3.3V.The heating plate of heater module need to be used AC220V Power supply, as shown in Figure 3, in order to prevent that single-chip microcomputer is interfered, need to use light-coupled isolation by the operating power isolation of single-chip microcomputer and heating plate, and in order to play real buffer action, photoelectric coupling input and output can not be altogether.
SHT11 sensor is relative humidity and the temperature sensor of the accurate numeral output of a monolithic whole school being made up of two sensor assemblies, and chip internal comprises relative humidity sensor, temperature sensor, amplifier, 14 A/D converters, calibration storage (E2PROM), random access memory (RAM), status register, cyclic redundancy check (CRC) code (CRC) register, two-wire serial interface, control module, well heater and low-voltage detection circuits.SHT11 combines temperature sensor and humidity sensor, and this just can make measuring accuracy improve, and carries the A/D converter of 14 in sheet, by 12 and 8 of the form outputs able to programme of I2C bus.System is used 2 general purpose I/O lines of single-chip microcomputer to carry out virtual I 2C bus.By the work schedule of mcu programming Simulation with I 2C bus, complete the collection to temperature, humidity data.The product interchangeability of SHT11 is good, fast response time, and antijamming capability is strong, does not need outer member, adapts to various single-chip microcomputers.Should be noted that in actual applications when single-chip microcomputer is connected with SHT11, between power pins (VDD, GND), must add the decoupling filter capacitor of a 100nF, and DATA connection jaws place needs an external pull-up resistor (10~20 ), as shown in Figure 4, wherein DATA pin mouth is used for reading and writing sensing data, in the time will sending write order to SHT11, when to be single-chip microcomputer send to sensor the instruction that gathers relative humidity and temperature data, DATA in the time of SCK rising edge effectively and must keep stable in the time of SCK high level.Now, DATA just can change after SCK negative edge.In the time wanting to send reading out data order to SHT11, sensor, by the data that gather after a series of variations such as internal amplifier amplification and analog to digital conversion, is sent to single-chip microcomputer and judges whether will open, stop heating plate.Now, DATA is effective after SCK negative edge, and is maintained to next SCK negative edge.In the time sending write order to SHT11, DATA line is by Single-chip Controlling; And in the time wanting to send reading order to SHT11, DATA line is by the control of SHT11 sensor.And for guaranteeing communication security, all should extend respectively a period of time the effective time of DATA before SCK rising edge He after negative edge.
As shown in Figure 5, with the X0 of CC4051, X1 pin is controlled respectively the clock line of two SHT11 sensors.When X0 output high level, first SHT11 sensor will gather the humiture value of high-tension distribution chamber of converting; In like manner, when X1 output high level, second SHT11 sensor will gather the humiture value of low-voltage distribution chamber.
As shown in Figure 6, communication module is responsible for transmitting data between single-chip microcomputer and host computer, and 24 pin of 2,3 pin of MAX1487 and PIC16F887 are joined, and 24 pin should be set to output, if be output as high level, send and enables; Otherwise reception enables.
The utility model can effectively prevent the generation of condensation in box-type substation cabinet, has improved box-type substation reliability of operation and security.The working strength that not only can reduce a staff, can also process contingent accident more rapidly and accurately.
Be more than preferred embodiment of the present utility model, all changes of doing according to technical solutions of the utility model, when the function producing does not exceed the scope of technical solutions of the utility model, all belong to protection domain of the present utility model.

Claims (7)

1. the anti-condensation supervising device of transformer station, it is characterized in that: multidiameter option switch, heater module, the alarm module that comprises main control module and be connected with this main control module and the communication module communicating with host computer, also comprise that one is used to the power module of whole device power supply, described main control module is also connected to the clock line of a Temperature Humidity Sensor module, and described multidiameter option switch is also connected to the data line of described Temperature Humidity Sensor module; Described Temperature Humidity Sensor module comprises the first Temperature Humidity Sensor for gathering the high voltage power distribution room temperature humidity in box-type substation and for gathering the second Temperature Humidity Sensor of the low-voltage distribution room temperature humidity in box-type substation.
2. the anti-condensation supervising device of transformer station according to claim 1, is characterized in that: described main control module adopts PIC16F887 chip, and adopts 4MHz crystal oscillator, and peripheral hardware crystal oscillating circuit and reset circuit.
3. the anti-condensation supervising device of transformer station according to claim 1, is characterized in that: described the first Temperature Humidity Sensor and the second Temperature Humidity Sensor all adopt the intelligent temperature/humidity sensor of SHT11 type.
4. the anti-condensation supervising device of transformer station according to claim 1, is characterized in that: described multidiameter option switch adopts CC4051 analog switch.
5. the anti-condensation supervising device of transformer station according to claim 1, is characterized in that: described communication module adopts MAX1487.
6. the anti-condensation supervising device of transformer station according to claim 1, is characterized in that: described power module comprises and is used to the AC220V power supply and first of described heater module power supply to second source change-over circuit; Described the first power-switching circuit is used for converting AC220V to DC5V, and is described main control module, communication module and multidiameter option switch power supply; Described second source change-over circuit converts DC3.3V to for the DC5V that described the first power-switching circuit is exported, and is described the first Temperature Humidity Sensor and the power supply of the second Temperature Humidity Sensor.
7. the anti-condensation supervising device of transformer station according to claim 6, is characterized in that: described the first power-switching circuit adopts transformer and circuit of three-terminal voltage-stabilizing integrated 7805; Described second source change-over circuit adopts AMS111733.
CN201420394107.4U 2014-07-17 2014-07-17 The anti-condensation supervising device of transformer station Expired - Fee Related CN203982237U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104375543A (en) * 2014-12-09 2015-02-25 国网上海市电力公司 Internal temperature and humidity measurement method of power distribution cabinet
CN104503521A (en) * 2014-12-09 2015-04-08 国网上海市电力公司 Temperature and humidity measuring device in power distribution cabinet
CN107765743A (en) * 2017-10-18 2018-03-06 国网江苏省电力公司南通供电公司 Power auto-adjustment type switch cubicle temperature and humidity control device based on temperature difference control

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104375543A (en) * 2014-12-09 2015-02-25 国网上海市电力公司 Internal temperature and humidity measurement method of power distribution cabinet
CN104503521A (en) * 2014-12-09 2015-04-08 国网上海市电力公司 Temperature and humidity measuring device in power distribution cabinet
CN107765743A (en) * 2017-10-18 2018-03-06 国网江苏省电力公司南通供电公司 Power auto-adjustment type switch cubicle temperature and humidity control device based on temperature difference control

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C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20141203

Termination date: 20170717

CF01 Termination of patent right due to non-payment of annual fee